Steam-boiler



PATENTED FEB. 16, 1904.

' N. L. WARREN. STEAM BOILER.

APPLIATION FILED MAY 22. 1903. N0 MODEL. 2 SHEETS-SHEET l.

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No. 752,492. PATENTED PEB. i6, 1904.

N. L. WARREN. STEAM BOILER.

APPLIOAHUN FILED MAY 22, 1903.

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Patented February 1e, 1904.

PATENT OFFICE.

NEUTON L. WARREN, OF MACON, GEORGIA;

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 752,492, dated February16, 1904.

Application tiled May 22, 1903. Serial No. 158,265. (No'model.)

To tu whom t may concer-n,.-

Beit known that I, Neuron L. WARREN, a citizen of the United States, anda resident of Macon, in the county of Bibb and State of Georgia, haveinvented a new and Improved Steam-Boiler, of which the following is afull, clear, and exact description.

This invention relates to improvements in steam-boilers, an object beingto provide a boiler of large heating capacity, but requiringcomparatively little iioor-space and so arranged that it may be readilyinspected and cleaned both within and without.

Other objects of the invention will appear in the general description.

I will describe a steam-boiler embodying my invention and then point outthe novel features in the appended claims. Y

Reference is to be had to the accompanying drawings, forming a part ofthis specilication, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional elevation of a steamboiler embodying myinvention. Fig. 2 is a front elevation thereof, partly in section; andFig. 3 is a detail showing means for securing the stay-rods.

The shell 1 of the boiler is preferably surrounded by a casing 2 ofasbestos or similar non-conducting material'. Arranged'at the frontofthe boiler-shell lare the two furnaces 3 4:, provided with suitable ashand fire doors, the said furnaces communicating through an opening- 5 atthe rear end of the partition- Wall. Communicating through 'the head 6with each furnace is a series of ues 7, these iiues at the rear endcommunicating through the rear head 8 with a chamber 9. Above eachseries of iiues 7 flues 10 provide communication between the chamber 9and the smoke-box 11 at the front end of the boiler, this smoke-boxhaving an uptake 12. Between the lower iiues 7 and the flues 10, abovethe same, tie-rods 13 connect the boiler-heads. These tie-rods 13 arebifurcated at the ends and are secured by means of pins to angleirons14, attached to the heads by rivets or otherwise. Above the upper setsof iiues 10 the boiler-heads are connected by tie-rods 15. Thesetie-rods 15, which may be either Solid or tubular, are threaded at theends to engage in socket members 16, riveted or otherwise secured to theheads. i

It will be noted that there is a considerable space between the tubesleading from the two furnaces and between the return upper flues. Thisspace will permit a person to pass through the boiler to inspect theilues and other parts of the interior, and the boiler-shelll is providedwith a manhole 17, normally closed by a cover 18.

To give strength to the boiler-heads without employing cross-braces andthe like, each head is bulged or pressed outward from top to bottom atthe center, as indicated at 19.

At the lower portion ofthe chamber 9 is an outlet-tube 20, through whichsoot-or the like may be discharged, this tubebeing closed by a swingingcover 21.

By arranging the several tie-rods as shown the heads of the boiler arethoroughly braced, and I avoid the use of cross braces or ties, thatwould take up considerable space in the boiler. Therefore I provide avery large heatingspace or water-containing space in a comparativelysmall Hoor-space.

The boiler may be drained out when necessary through a tube 22, extendedthrough the bottom thereof.

Having thus described my invention, I claim as new and desire tosecurefbyLetters Patent* l. A boiler, comprising a shell, heads for theboiler, each head having a vertically-disposed swelled or bulged-outcentral portion, extending from top to bottom, sets of ues arranged oneabove the other and passing through the heads, tie-rods arranged betweenthe heads and between the upper and lower sets of tubes, and tie-rodsfor the heads arranged above the upper sets of tubes.

2. In a boiler, a shell having a smoke-box at its front end and asoot-chamber at its rear end, sets of tubes arranged one above theother, one set leading into the soot-chamber and the other set from thesoot-chamber to the smokebox, tie-rods connectingv the heads of theshell and arranged between the sets of tubes, and tie-rods connectingthe heads of the shell and arranged above the upper set of tubes.

3. A steam-boiler having a smoke-box at its IOO ' posite sides of saidbulgedout portions and front head and a soot-chamber at its rear end,two furnaces arranged at the front end of the boiler, a setof tubesleading fromeach furnace to the soot-chamber, the sets of tubes beingspaced apart, a set of tubes arranged above each of the first-named setsof tubes and leading from the soot-chamber to the smoke-box, the saidsets of tubes being spaced from each other and from the saidiirst-narned sets of tubes, and tie-rods connecting the heads of theboiler.

4. A boiler, comprising a shell, two furnaces at one end of said shell,a soot-chamber at the opposite end of the boiler, heads for the boiler`having bulged-out central vertical portions, tubes extended through theheads at opproviding communication between the furnaces and thesoot-chamber, a smoke-box at the front of the furnaces, opposite return-'tubes above the first-named tubes and providing communication betweenthe soot-chamber 'and the smoke-box, there being a considerable spacebetween the tubes of the furnaces and the sets of tubes of each furnace,the shell being provided with a manhole above said space, and tie-rodsconnecting the heads.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

NEUTON L. WARREN.

Witnesses:

FRANCIS HERRING, J oHN S. SCHOFIELD.

